Hi,Would it be possible to get a kind of upgrade kit with optical end stops, the new print bed and maybe even the retracting extrudes? Or can somebody recommend me compatible parts to upgrade my printer? Sincerely,Gamemaker

Really not many options on the market for retracting extruder / hotend systems that I've found anyway. Dglass3d makes a system but you'd have to mod the whole thing. They use to make independent lifting hotends but have sense stopped selling them. I've personally been working on cadd drawings for my own water cooled autolift heads with a new holding block that has piezoelectric sensor's for bed leveling calibrations plus larger rods for better stability. But I've got a long way to go.